On Fri, 2007-01-12 at 23:28 -0500, D. Hugh Redelmeier wrote: > Context: I installed FC6 on my daughter's notebook during the > Christmas break. Some time later, fetchmail stopped working. > > It turned out that fetchmail tries to inject local mail by using SMTP > with localhost port 25 (reasonable). > > Sendmail IS listening to 127.0.0.1 port 25. > > /etc/hosts says localhost is ::1. This is the IPv6 version of > localhost. > > So fetchmail is trying to contact ::1 port 25 but nobody is listening. > > Which part of this is wrong? How come fetchmail worked for a while > after FC6 was installed? > > I fixed the fetchmail problem by changing the definition of localhost > from ::1 to 127.0.0.1. > > In /etc/mail/submit.mc, the config file for the sendmail submission > daemon, there is a pair of lines: > dnl If you use IPv6 only, change [127.0.0.1] to [IPv6:::1] > FEATURE(`msp', `[127.0.0.1]')dnl > That looks as if you must chose between IPv4 and IPv6. That seems > dumb. > > On my FC6 system (which does not handle mail), there are two lines > defining localhost -- one with ::1 and the other with 127.0.0.1. > On my daughter's system (now) only the ::1 line appears. Why? Maybe > because she used the network gui to disable eth1 (for some reason her > notebook started leaching connectivity from neighbour's WiFi instead > of using her perfectly good wired connection). > > This seems like a bug, but I don't know which component is wrong: > sendmail (for not listening to ::1). > whatever whacked /etc/hosts (for losing 127.0.0.1 as localhost). > I think that fetchmail is blameless. Except that the error message > wasn't too clear. > The culprit may be system-config-network. See Bugzilla (214932). Putting the ipv4 entry ahead of the ipv6 entry may keep system-config-network from doing this again if you use it again. -- Arthur Dickinson <adickinson@xxxxxxxxxx>
